HD 153791 is a double star in the southern constellation of Ara. The primary is a sixth magnitude A-type main sequence star.[2] It has a magnitude 12.3 companion at an angular separation of 6.0″ along a position angle of 249°, as of 1999.[7]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 03m 41.68344s[1] |
| Declination | −47° 09′ 38.0565″[1] |
| Apparent magnitude (V) | 6.07[2] |
| Characteristics | |
| Spectral type | A5V[3] |
| B−V color index | +0.07[4] |
| Astrometry | |
| Radial velocity (Rv) | 3.8±0.5[2] km/s |
| Proper motion (μ) | RA: +0.04[1] mas/yr Dec.: +5.36[1] mas/yr |
| Parallax (π) | 6.61 ± 0.44 mas[1] |
| Distance | 490 ± 30 ly (150 ± 10 pc) |
| Details | |
| Luminosity | 66.6[5] L☉ |
| Temperature | 8,346[5] K |
| Rotational velocity (v sin i) | 70[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
edit- ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600
- ^ a b c Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Paunzen, E.; et al. (July 2001), "A spectroscopic survey for lambda Bootis stars. II. The observational data", Astronomy and Astrophysics, 373 (2): 625–632, Bibcode:2001A&A...373..625P, doi:10.1051/0004-6361:20010630
- ^ Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C
- ^ a b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352
- ^ Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298.
- ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22
External links
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